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4 monitors side by side.

6 h a day
  • Electricity at €0.2832 per kWh (household price with taxes, Eurostat 2026-S1).
  • 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
  • AOC

    E970SWN
    E 19″HDLCD / LED

    €7.69 per year

    +€3.35 a year

  • LG

    20MK400H
    D 19″HDLCD / LED

    €7.07 per year

    +€2.73 a year

  • Cheapest to run

    SKitphrati

    HD-185
    D 19″HDLCD / LED

    €4.34 per year

  • Lenovo

    C19-10(D19185AD0)
    D 19″HDLCD / LED

    €5.83 per year

    +€1.49 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • AOC E970SWN €7.69
  • LG 20MK400H €7.07
  • SKitphrati HD-185 €4.34
  • Lenovo C19-10(D19185AD0) €5.83
Model AOC E970SWN LG 20MK400H SKitphrati HD-185 Lenovo C19-10(D19185AD0)
Running cost
Running cost (per year) €7.69 €7.07 €4.34 €5.83
over 10 years €77 +€33 over 10 years €71 +€27 over 10 years €43 €58 +€15 over 10 years
kWh per year 27.2 25 15.3 20.6
kg CO₂e per year from electricity use 5.7 5.2 3.2 4.3
Specifications
Brand AOC LG SKitphrati Lenovo
Model E970SWN 20MK400H HD-185 C19-10(D19185AD0)
Energy class E D D D
Screen size 19″ (47 cm) 19″ (49.4 cm) 19″ (44 cm) 19″ (47 cm)
Power in on mode (SDR) 12.4 W 11.4 W 7 W 9.4 W
Standby 0.5 W 0.5 W 0.5 W 0.2 W
Off mode 0.3 W 0.3 W 0.3 W 0.1 W
Resolution 1366 × 768 1366 × 768 1366 × 768 1366 × 768
Aspect ratio 16:9 16:9 4:3 16:9
Panel LED LCD LED LCD LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz 60 Hz
Power supply Internal External External Internal
Guaranteed support 8 years 8 years 5 years 7 years
Software updates 8 years 8 years 5 years 8 years
Spare parts available 7 years 8 years 5 years 7 years
On the market since January 1, 2019 February 26, 2021 February 11, 2025 August 12, 2019
EPREL registration number 393946 356179 2261093 340090
Energy class (HDR) – – D –
Power in on mode (HDR) – – 7 W –
Networked standby – – 0 W –

Rows where the models differ are highlighted.